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19521 Chaos (1998 WH24)
Classification: TransNeptunian Object          SPK-ID: 2019521
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1042604243004118 8.3165e-05  
a 45.71845540276265 0.0071275 au
q 40.95182984411116 0.0039035 au
i 12.05525866094795 0.00026622 deg
node 50.03827671786409 0.00024769 deg
peri 58.72782523922346 0.059282 deg
M 337.5973954012683 0.050393 deg
tp 2464626.882107924345
14.342 JED
period 112910.8692565133
n .003188355579675366 7.456e-07 deg/d
Q 50.48508096141413 0.0078707 au
  Orbit Determination Parameters
   # obs. used (total)      110  
   data-arc span      5902 days (16.16 yr)  
   first obs. used      1991-10-17  
   last obs. used      2007-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      3  
   fit RMS      .6341  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 22:26:37  

Additional Information
 Earth MOID = 39.9832 au 
 Jupiter MOID = 35.8244 au 
 T_jup = 5.880 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 4.8 mag n/a MPO166030  

19521 Chaos           Discovered 1998 Nov. 19 by the Deep Ecliptic Survey.
According to Hesiod, Chaos gave birth to Nyx (Night) and Erebus (Darkness). In the Pelasgian creation myth, Eurynome, the Goddess of All Things emerged from Chaos. In the Olympian version, Mother Earth emerged from Chaos.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020328/MPCPages.arcLast Updated: 2003-10-02
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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